My truck is hard to start when cold and hot. What have I done?

Tiny
FIREMARSHALMIKE
  • MEMBER
  • 1978 FORD F-150
  • 17,000 MILES
Hello. I have a 1978 Ford F150 w/ a 302 2bbl. I had a new engine put in it in 2004 and only have about 6500 miles on it. I just had the carb professionally rebuilt due to the truck being hard to start when hot and bogging down when accelerated. I put the carb on and it started fine. Went to drive and it is still bogging down and still hard to start when hot. I checked plug wires, coil, air cleaner, distributor. During the check, I have done something very wrong and can’t find what I did. The engine is now hard to start when cold. It sounds like it is just about to start but won’t. After several attempts, smoke is coming from carb and smoke coming from oil valve cover vent and oil dispstick. I let it cool and it will finally start and once running the smoke goes away and it idles fine, except for under load. Still hard to start when hot. Now hard to start when cold. Can somebody tell me what I have screwed up? Thank you for your time.
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Sunday, August 26th, 2012 AT 5:37 PM

3 Replies

Tiny
ASEMASTER6371
  • EXPERT
What is the base ignition timing? Do you have a vacuum advacne?

Roy
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Sunday, August 26th, 2012 AT 5:43 PM
Tiny
BAMBAM302
  • MEMBER
It sounds like it is out of time by 180 degrees. You need to find number one cylinder and put it on top dead center and then make sure your distributor points are on the number one cylinder.
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Monday, March 19th, 2018 AT 8:18 AM
Tiny
ASEMASTER6371
  • EXPERT
Did you check to see if the distributor moved? If the base bolt is not tight it could move around
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Monday, March 19th, 2018 AT 8:24 AM

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